The RPD

Question

The RPD
A) Is a border between the presence and absence of bacteria
B) Is only found in estuarine sediments
C) May only be a horizontal surface
D) Is a border between oxidative and reducing processes in sediments

Accepted Answer

The RPD (Redox Potential Discontinuity) layer is a boundary in sedimentary environments where there is a shift from oxidative processes (above the RPD) to reducing processes (below the RPD). This transition is crucial for the chemical and biological processes in sedimentary environments.